Answer:attempting to determine etiology
Explanation:Etiology in psychology Rees to factors that have caused an individual to develop a certain disorder. Mental and psychological disorders have been found by psychologist to be caused by internal factors , loss, pain and environmental factors and this is why Dr Clarkson is trying to establish these factors because they are crucial in making psychological diagnosis.
Answer: t=-5.651
Explanation:
Let
be the population mean number of hours a week answering their email.
As per given we have

Sample size : n= 783
Sample mean : 
Sample standard deviation: s=7.23
Since population standard deviation is unknown, so our test -statistic has a t-distribution.
Test statistic : 

∴ The test statistic : t=-5.651
The similarity is that both are a Plateau: a vast area located relatively high, but which is rather even (this distinguishes it from a mountain range).
The differences are:
-while Atacama is barely populated, the Altiplato has a number of cities, such as Cuzco
-The Atacama receives less precipitation than Altiplato